71729313 has 8 divisors (see below), whose sum is σ = 100672800. Its totient is φ = 45302688.

The previous prime is 71729311. The next prime is 71729321. The reversal of 71729313 is 31392717.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71729313 - 2¹ = 71729311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71729311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629148 + ... + 629261.

It is an arithmetic number, because the mean of its divisors is an integer number (12584100).

Almost surely, 2^71729313 is an apocalyptic number.

It is an amenable number.

71729313 is a deficient number, since it is larger than the sum of its proper divisors (28943487).

71729313 is a wasteful number, since it uses less digits than its factorization.

71729313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258431.

The product of its digits is 7938, while the sum is 33.

The square root of 71729313 is about 8469.3159700179. The cubic root of 71729313 is about 415.4947657839.

The spelling of 71729313 in words is "seventy-one million, seven hundred twenty-nine thousand, three hundred thirteen".